A podcast is a voice recording that you can make for pretty much and reason and post pretty much anywhere, you can even upload them to your ipod to listen to them. There are many ways that podcasting in education can fit into the NETS-T standards. The first type of podcast you could do is to have the students create their own podcast as a class project. I think that this fits the first standard the most because the first standard states that it facilitates and inspires students learning and creativity. This activity lets the students think creativly, therefor doing creative work. This also enagages students and allows them to use digital tools and resources in a way furthering their education even more. It lets the students reflect of what they specifically learned and to present it in a creative and innovative way.
Another possible use of a podcast in education is to have the teacher have a website for the class so that when the students miss a class they can go on the website and get the assignments they missed. This kinda of fits into standard two, design and develop digital-age learning experiences and assesments. The fact that they have to access the internet to get their assignments and complete them gets tehm more involved in the digital age and helps them learn tech savvy. This process helps the children learn how to maximize content learning. You can also post whole podcasted lessons on there for students that were not in class so they still have the same information as the rest of the class and do not fall behind.
Another thing that teachers can do is to make podcasts about teaching tips and feedback to other teachers and maybe have a website at each school or district for all the teachers to collaborate and give feedback. This fits into the fifth standard, engage in professional growth and leadership. you participate in learning communities to explore creative ways to teach students from other teachers past successes. You can also contribute to the effectivness of the teaching profession in your school and community but giving your own tips and feedback in podcast form that anyone can access and listen to.